Air Force is looking for a starting fullback and it looks like Wesley Cobb and Mike DeWitt will be one-two on the depth chart. In this option offense, the fullback is an important component and can certainly get on a roll with yardage and scores.
DeWitt was highly-regarded until getting hurt last season. Both figure to get touches early in the season as the situation sorts itself out, unless one makes a big break in fall camp. That doesn't seem likely as both have demonstrated a toughness the Falcons like in their fullbacks.